Could you clarify for me, what specific alphabet are you referring to when you ask about "What alphabet uses Alpha?"? Is it a particular coding language, financial terminology, or perhaps a unique system of notation? Understanding the context would help me provide a more accurate answer. In general, the term "Alpha" is often used in finance to describe the excess return of an investment over a benchmark, but it's not directly tied to a specific alphabet as such. Could you elaborate on your question, please?